Sanitary floor-drain.



F. H. SAMSON.

SANITARY FLOOR DRAIN.

APPLICAUON mio MAR.28.1916.

Patented Jan. 9, 1917.

2 SHEETS-SHEET l F. H. SAMSON.

SANITARY FLOOR DRAIN.

APPLICATION mw MAR. 2a. isle.

Patented Jan. 9, v1917'.

,'ZSHEETS-'SHEET 2.

soV

nu ont.

FREDERICK I-I. SAMSON, 0F DENVER, COLORADO.

SANITARY ELO (3R-DRAIN.

. Specification of Letters Patent.

Patented Jan. 9, 1917.

Application filed March 2S, 1916. Serial No. 87,167.

To all whom t may concern:

invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the ac# companying drawings, and to the characters of reference marked thereon, which forni part of this specification.

My invention relates to improvements in sanitary floor drains or ymeans for removing the drainage water and all liquid impurities from stables, garages, laundries and other localities where liquid impurities Icollectand must beremoved that reasonably sanitary conditions may bemaintained.

My object is to provide a deviceV of this character which shall prevent theexposure of the water inthe liquid seal forming a part of the device, to the atmosphere.

My improved `construction includes a gravity actuated check valve adapted to swing inwardly into the upper 'part of the trap as the drainage water whichenters the basin of the device through aL perforated cover, flows downwardly and encounters the outer surface of the valve or swinging gate.

One feature of novelty consists in providing the bottom of the, basin which receives the drainage water inthe first instance, with an abrupt downward curve adjacent the valve, whereby the liquid practically drops or falls, as distinguished from a gentle iow down a gradual incline, into contact with the valve, thus maln'ng it practicable to cause the valve to open inwardly, to allow the liquid to enter the trap, thus preventing an accumulation of the liquid in the bottom of the basin before the valve will open. By virtue of my improvement the smallest quantity of drainage liquid will cause the valve to open, whereby the trap receives the liquid virtually as fast as it enters the basin. This is an important feature, since, if there is an accumulation of liquid within the basin and outside of the valve, before the valve opens, this will result-in the production of disagreeable odors, thus rendering the device unsanitary and producing general unhealthful conditions'in the vicinity of its location.

Y Another feature of novelty, consists in so constructing the trap that the cover is supported centrally'of its area by a lug or projection, thus making it practicable to employ a cover of lighter weight or containing less material than would otherwise be required. Again, the basin of-my improved device extends above the top of the trap, thus providing a drainage area of suitable magnitude, and at the same time reducing the space occupied by the device to the minimum. In this construction the top of the trap is closed by a removable cap which is arranged below the perforated cover of the basin of the drain, wherebythe entire areaof the trap may be utilized for drainage purposes as just explained. Y

Havingbriefly outlined ymy, improvement, as well' as some yof the functionsv it is intended to subserve, I will proceed .to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof. In this drawing, Figure 1v is a top' plan view of my' improved sanitary floorY drain. Fig. 2 isvasection taken on the line 2.3, Fig. l, looking toward the right. Fig. 8 is a sectiontaken on the same line, looking toward the left. 4 is a top plan view of the device with the perforated cover removed. y Fig. 5 is a section taken on the line 5-5, Fig. 1.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the top or basin of my improved device which is circular in shape and provided with a chamber or concavity 6 of suitable depth for the purpose. Surrounding the outer-.portion of the basin just within the upper surface 7 of the rim of the device, is a circumferential ledge 8 which forms the support for the outer edge of a perforated plate 9 which forms a cover for the basin of the drain. This cover is further supported centrally by means of an upwardly projecting lug 10 formed integral l s, shape preferably square, whereby yit isA with and projecting upwardly from the top 12 of the trap portion 13 of the device. This trap consists of a receptacle Aof much less area in horizontal section thanthe basin, its horizontal area, however, being included within that of the basin and covered and protected by the perforated Aplate yor cover 9. The top of the trap a short distance below the lower surface of the perforated plate Vor cover-is provided with an'interiorly threaded opening 14 adapted to receive a cap 15 which is eXteriorly threaded to coperate with the'threadsY of the opening 14. This cap is centrally provided with a Vshort upward projection 16 which is polygonal in adaptedto receive'a wrench to facilitate its manipulation for purposes of insertion or removaly In any event, the upper surface of this cap occupies a `position below the lower surface of the cover 9fand lthe top of the cover is curved, andthe surface or bottom of the lbasin surrounding the cover is arranged to slope downwardly toward the upper edge 17 of a relatively small depressed portion 18 of the bottom of the basin. From the upper edge 17 ofthe depression 18,y the bottom ofthe latter'is downwardly curved abruptly as'shown at '19 to the circular outlet opening20 which is normally closed'by v an inwardly opening plate ycheck valve 21 l; otally connected to swing freely inwardly whichhas a bifurcatedprojection 22 arranged Vto straddle ,ai perforated lug 23`V through which a hin'gepin 24 is passed, By virtue of thisv construction the valve is'pivf inresponse to 'thepressure of liquid entering the abrupt depression 18rof the basin.

v lowest part 26"of the opening 20 throughl i The lower V'portioiji 25 ofthe trap member of the device, extends entirely below the which` the liquid passes from the basin into the trap,thus `making it impossible for any liquid. to remain exposed in thebasin adjacentY the valve. Asshown in the draw- `ing, thehighest level 27 .of theliquid is ap- .preciablylowerthanthe lowest portion 26 of the opening20.v This level ofthe liquid is of course determinediby 1Vtheyl'owest level 28 ofthe draink pipe or nozzle 29 which is cast integral with the body ofthe 'device and merges at its innerextremity into' a depending partition 30 `which extends downwardly :into the lower portion ofthe trap, whereby the liquidmust flow'downwardly and thence upwardly through thef lower 1 portion of the trap before ventering the drain nozzle .728. The outer extremity Vof this drain nozzle may be connected V'with ai drain pipe 31 leadingtoV the sewer, in any suitableman- 1 ner,one.form,of'such rconnection being indi- ;@aedaa 1;-

e f z From-the Vforegoing description the man- Y `:nei-fofinstalling.my improvedf'device'will vicinity naturally flows automatically intothe basin. This is a feature which may-be regulated as desired and according to the circumstances or conditions in any particular locality where the device is installed.

Attention is called to the fact that my improved ioor drain is largely composed of a single casting. In other words, the entire structure with the eXceptionof the valve 21, the screw cap 15 andthe `cover 9, is com` posed of an integral casting which is an important advantage in a structure of this class.

Having thus described my invention, what I claim is,-

1. AV floor drain comprising a. basin memberand a Vtrap having a liquid seal in its bottom portion, a depressed portion formed integrally with said basin, extending abruptly downwardly below the bottom thereof and terminating with `its{ lower Yedge above-the water level of said trap, thetrap being provided 'with an opening for establishing communication between said depressed portion of the basin and the trap, a check valve adapted to 'normally close said opening from theatmosphere, a removable cap for the trap adapted to aordeasy access to said check valve and a'perforated cover for said basin.

2. A floor drain comprising a basin member and a tra-p having a liquid seal in its bottom portion, a contracted, depressed ,portion formed integral withsaid basin extendingabruptly downwardly below the `bottom thereof and terminating with itslower edge above the water level of said trap, to provide a discharge nozzle forthe water, the

trap being provided with 'an opening for establishing communication between said depressed portion of the basinand the trap,

and a check valve adaptedto normally close said opening Vfromthe atmosphere.

3. A {ioor drain comprising a basin member, and a circular trap integral therewith and-having a liquid seal in its bottom porwithan opening forestablishing communication between said discharge passage and In testimony whereof I aix my signature, tllle trap, a check vaflve adpted to nlormally in presence of two witnesses.

o ose said opening rom t e atmosp ere, an

upstanding lug formed integral with said FREDERICK H SAMSON trap casing, and a perforated, removable Witnesses:

cover for said basin centrally supported on GRACE I-IUstroN7 said lug. A. EBERT OBRIEN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

